lcd_i2c_setCursor function for LCD 20x04

[luke514]

I hope this is the right section of the site to ask this question, otherwise please redirect this thread.

I just started programming, I am using a 20x04 LCD with stm32F407G and I need the classic function "

lcd_i2c_setCursor (row, col); ". I am not able to implement it by modifying the one already in the 16x02 display library.

So I am asking if you can redirect/send me to a post or link where this function is explained for 20x04 or if someone already has it and can attach the code so that I can "copy-paste" it into my project.

Or if there is a way to modify the function " lcd_i2c_setCursor (row, col); " that I have for the 16x02 LCD ... we can modify it here together:

void lcd16x2_i2c_setCursor(uint8_t row, uint8_t col)
{
  uint8_t maskData;
  maskData = (col)&0x0F;
  if(row==0)
  {
    maskData |= (0x80);
    lcd16x2_i2c_sendCommand(maskData);
  }
  else
  {
    maskData |= (0xc0);
    lcd16x2_i2c_sendCommand(maskData);
  }
}

Thank you.

[Foued_KH]

Hello @luke514​ ,

You can refer to this example.

Please find the attachment the I2C-lcd libraries.

  /* USER CODE BEGIN 2 */
 
  lcd_init();
 
  lcd_send_cmd (0x80|0x00);
  lcd_send_string("FIRST");
 
  lcd_send_cmd (0x80|0x40);
  lcd_send_string("SECOND");
 
  lcd_send_cmd (0x80|0x1C);
  lcd_send_string("THIRD");
 
  lcd_send_cmd (0x80|0x54);
  lcd_send_string("FINISH");
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
	  for (int i=0; i<5; i++)
	  {
		  lcd_send_cmd (0x1C);  // display shift right
		  HAL_Delay(350);
	  }
 
	  for (int i=0; i<5; i++)
	  {
		  lcd_send_cmd (0x18);  // display shift left
		  HAL_Delay(350);
	  }
  }
  /* USER CODE END 3 */

Foued

[luke514]

Thank you for your reply! I finally managed a few weeks ago to find the function I needed.